Understanding Variables in JavaScript: var, let, and const
Learn the difference between var, let, and const in JavaScript, and which one you should use by default in modern code.
JavaScript Basics
How to Add JavaScript to an HTML Page
Learn the two ways to connect JavaScript to an HTML page, where to place your script tag, and the most common mistake beginners make.
What Is JavaScript? A Beginner’s Introduction
Wondering what makes websites interactive? Learn what JavaScript is, where it runs, and what beginners can build with it.